Editing Turmeric (section)

==Origin and distribution==
The greatest diversity of ''[[Curcuma]]'' species by number alone is in [[India]], at around 40 to 45 species. [[Thailand]] has a comparable 30 to 40 species. Other countries in tropical Asia also have numerous wild species of ''Curcuma''. Recent studies have also shown that the taxonomy of ''C. longa'' is problematic, with only the specimens from South India being identifiable as ''C. longa''. The phylogeny, relationships, intraspecific and interspecific variation, and even identity of other species and cultivars in other parts of the world still need to be established and validated. Various species currently utilized and sold as "turmeric" in other parts of Asia have been shown to belong to several physically similar taxa, with overlapping local names.<ref>{{cite journal |last1=Leong-Škornickova |first1=Jana |last2=Šida |first2=Otakar |last3=Wijesundara |first3=Sirtl |last4=Marhold |first4=Karol |title=On the identity of turmeric: the typification of ''Curcuma longa'' L. (Zingiberaceae) |journal= [[Botanical Journal of the Linnean Society]] |date=May 2008 |volume=157 |issue=1 |pages=37–46 |doi=10.1111/j.1095-8339.2008.00788.x|doi-access=free }}</ref><ref name="Nair2013">{{cite book |last1=Nair |first1=K.P. Prabhakaran |title=The Agronomy and Economy of Turmeric and Ginger: The Invaluable Medicinal Spice Crops |date=2013 |publisher=Newnes |isbn=9780123948243 |pages=7–10 |url=https://books.google.com/books?id=8EMVI8Fy8VMC}}</ref>